Building block toy



FIG. 1 is a perspective view of the building block toy showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view of thereof;

FIG. 7 is a bottom plan view of thereof; and,

FIG. 8 is a perspective view thereof when more than one building block toy is connected.

The broken lines in FIG. 3 are for the purpose of illustrating portions of the article that form no part of the claimed design. The broken lines in FIG. 8 represent the environment in which the article resides and form no part of the claimed design. 

CLAIM The ornamental design for a building block toy, as shown and described. 